The Thai name for this fruit is chompoo, and I've seen any number of English names for it, such as water apple or Malay apple, but I've decided to call it "rose apple". The rose apple is yet another fruit with a surprise up its sleeve. Based on its outward appearance, it could easily be mistaken for a small pear, although the skin is usually quite waxy compared to pears. But when you cut the rose apple open, you won't find a core filled with seeds. The core of a rose apple is more or less hollow, with a bit of cottony fluff that should be scraped out and discarded.